<div dir="ltr"><div>Hi, <br></div><div><br></div><div>RTP FO is possible, e.g. with keepalived+rtpengine+Redis as people suggested.<br></div><div><br></div><div>Here's the guide for configuring it which I find very useful:<br></div><div><a href="https://github.com/sipwise/rtpengine/wiki/Redis-keyspace-notifications">https://github.com/sipwise/rtpengine/wiki/Redis-keyspace-notifications</a></div><div><br></div><div>A possible way is to have a pair of rtpengine instances in master-slave setup. When master goes down, RTP continues on slave (new master) after a few seconds gap, when the virtual IP(s) migrate over.<br></div><div><br></div><div>Another useful link:<br></div><div><p><a class="external-link" href="https://www.kamailio.org/events/2016-KamailioWorld/Day2/20-Pawel.Kuzak-High-Quality-Telephony-Using-A-Fail-Safe-Media-Relay-Setup.pdf" rel="nofollow">https://www.kamailio.org/events/2016-KamailioWorld/Day2/20-Pawel.Kuzak-High-Quality-Telephony-Using-A-Fail-Safe-Media-Relay-Setup.pdf</a></p><p>Good luck!</p><p>Yufei<br></p><p><a class="external-link" href="https://github.com/sipwise/rtpengine/wiki/Redis-keyspace-notifications" rel="nofollow"></a></p></div></div>